How to disable suggested contacts in Microsoft Outlook?
By default, Outlook 2010 automatically adds the recipients you sent emails to in the Suggested contacts folder if the recipients were not saved in your Outlook contacts folder. After a long period of Outlook using, you will find that there are numerous useless email addresses staying in your suggested contacts folder. Then you have to manually clear this folder up. Disable suggested contacts is a good way for you to avoid Outlook keeping adding strange recipientโs email addresses to the suggested contacts folder.
Disable suggested contacts in Microsoft Outlook 2010
Disable suggested contacts in Microsoft Outlook 2010
In Outlook 2010, you can disable suggested contacts as follows.
1. Please click "File" > "Options".

2. In the "Outlook Options" dialog box, please click "Contacts" in the left bar, then uncheck the "Automatically create Outlook contacts for recipients that do not belong to an Outlook Address Book" box in the "Suggested contacts" section. Click the "OK" button.

3. After finishing this setting, when you sending emails to some strange recipients next time, their addresses will not be stored into the "Suggested Contacts" folder any more.
Note: There is no suggested contacts feature in Outlook 2007 and 2013.
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